Class: Opal::Nodes::DefinedNode
- Inherits:
-
Base
- Object
- Base
- Opal::Nodes::DefinedNode
show all
- Defined in:
- opal/lib/opal/nodes/defined.rb
Instance Attribute Summary
Attributes inherited from Base
#compiler, #sexp, #type
#closure
Instance Method Summary
collapse
Methods inherited from Base
#add_gvar, #add_ivar, #add_local, #add_temp, #children, children, #class_variable_owner, #class_variable_owner_nesting_level, #comments, #compile_to_fragments, #error, #expr, #expr?, #expr_or_empty, #expr_or_nil, #fragment, handle, handlers, #has_rescue_else?, #helper, #in_ensure, #in_ensure?, #in_resbody, #in_resbody?, #in_rescue, #in_while?, #initialize, #process, #push, #recv, #recv?, #s, #scope, #source_location, #stmt, #stmt?, #top_scope, truthy_optimize?, #unshift, #while_loop, #with_temp, #wrap
#closure_is?, #compile_catcher, #generate_thrower, #generate_thrower_without_catcher, #in_closure, #pop_closure, #push_closure, #select_closure, #thrower
Methods included from Helpers
#current_indent, #empty_line, #indent, #js_truthy, #js_truthy_optimize, #line, #mid_to_jsid, #property, #valid_name?
Instance Method Details
#compile ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 12
def compile
case value.type
when :self, :nil, :false, :true
push value.type.to_s.inspect
when :lvasgn, :ivasgn, :gvasgn, :cvasgn, :casgn, :op_asgn, :or_asgn, :and_asgn
push "'assignment'"
when :lvar
push "'local-variable'"
when :begin
if value.children.size == 1 && value.children[0].type == :masgn
push "'assignment'"
else
push "'expression'"
end
when :send
compile_defined_send(value)
wrap '(', " ? 'method' : nil)"
when :ivar
compile_defined_ivar(value)
wrap '(', " ? 'instance-variable' : nil)"
when :zsuper, :super
compile_defined_super
when :yield
compile_defined_yield
wrap '(', " ? 'yield' : nil)"
when :xstr
compile_defined_xstr(value)
when :const
compile_defined_const(value)
wrap '(', " ? 'constant' : nil)"
when :cvar
compile_defined_cvar(value)
wrap '(', " ? 'class variable' : nil)"
when :gvar
compile_defined_gvar(value)
wrap '(', " ? 'global-variable' : nil)"
when :back_ref
compile_defined_back_ref
wrap '(', " ? 'global-variable' : nil)"
when :nth_ref
compile_defined_nth_ref
wrap '(', " ? 'global-variable' : nil)"
when :array
compile_defined_array(value)
wrap '(', " ? 'expression' : nil)"
else
push "'expression'"
end
end
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#compile_defined(node) ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 62
def compile_defined(node)
type = node.type
if respond_to? "compile_defined_#{type}"
__send__("compile_defined_#{type}", node)
else
node_tmp = scope.new_temp
push "(#{node_tmp} = ", expr(node), ')'
node_tmp
end
end
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#compile_defined_array(node) ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 215
def compile_defined_array(node)
node.children.each_with_index do |child, idx|
push ' && ' unless idx == 0
compile_defined(child)
end
end
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#compile_defined_back_ref ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 200
def compile_defined_back_ref
helper :gvars
back_ref_temp = scope.new_temp
push "(#{back_ref_temp} = $gvars['~'], #{back_ref_temp} != null && #{back_ref_temp} !== nil)"
back_ref_temp
end
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#compile_defined_const(node) ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 162
def compile_defined_const(node)
const_scope, const_name = *node
const_tmp = scope.new_temp
if const_scope.nil?
push "(#{const_tmp} = #{scope.relative_access}('#{const_name}', 'skip_raise'))"
elsif const_scope == s(:cbase)
push "(#{const_tmp} = #{top_scope.absolute_const}('::', '#{const_name}', 'skip_raise'))"
else
const_scope_tmp = compile_defined(const_scope)
push " && (#{const_tmp} = #{top_scope.absolute_const}(#{const_scope_tmp}, '#{const_name}', 'skip_raise'))"
end
const_tmp
end
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#compile_defined_cvar(node) ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 178
def compile_defined_cvar(node)
cvar_name, _ = *node
cvar_tmp = scope.new_temp
push "(#{cvar_tmp} = #{class_variable_owner}.$$cvars['#{cvar_name}'], #{cvar_tmp} != null)"
cvar_tmp
end
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#compile_defined_gvar(node) ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 185
def compile_defined_gvar(node)
helper :gvars
name = node.children[0].to_s[1..-1]
gvar_temp = scope.new_temp
if %w[~ !].include? name
push "(#{gvar_temp} = ", expr(node), ' || true)'
else
push "(#{gvar_temp} = $gvars[#{name.inspect}], #{gvar_temp} != null)"
end
gvar_temp
end
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#compile_defined_ivar(node) ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 135
def compile_defined_ivar(node)
name = node.children[0].to_s[1..-1]
tmp = scope.new_temp
push "(#{tmp} = #{scope.self}['#{name}'], #{tmp} != null && #{tmp} !== nil)"
tmp
end
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#compile_defined_nth_ref ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 207
def compile_defined_nth_ref
helper :gvars
nth_ref_tmp = scope.new_temp
push "(#{nth_ref_tmp} = $gvars['~'], #{nth_ref_tmp} != null && #{nth_ref_tmp} != nil)"
nth_ref_tmp
end
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#compile_defined_send(node) ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 94
def compile_defined_send(node)
recv, method_name, *args = *node
mid = mid_to_jsid(method_name.to_s)
if recv
recv_code = compile_defined(recv)
push ' && '
if recv.type == :send
recv_code = compile_send_recv_doesnt_raise(recv_code)
push ' && '
end
recv_tmp = scope.new_temp
push "(#{recv_tmp} = ", recv_code, ", #{recv_tmp}) && "
else
recv_tmp = scope.self
end
recv_value_tmp = scope.new_temp
push "(#{recv_value_tmp} = #{recv_tmp}) && "
meth_tmp = scope.new_temp
push "(((#{meth_tmp} = #{recv_value_tmp}#{mid}) && !#{meth_tmp}.$$stub)"
push " || #{recv_value_tmp}['$respond_to_missing?']('#{method_name}'))"
args.each do |arg|
case arg.type
when :block_pass
else
push ' && '
compile_defined(arg)
end
end
wrap '(', ')'
"#{meth_tmp}()"
end
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#compile_defined_super ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 147
def compile_defined_super
push expr s(:defined_super)
end
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#compile_defined_xstr(node) ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 158
def compile_defined_xstr(node)
push '(typeof(', expr(node), ') !== "undefined")'
end
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#compile_defined_yield ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 151
def compile_defined_yield
scope.uses_block!
block_name = scope.block_name || scope.find_parent_def.block_name
push "(#{block_name} != null && #{block_name} !== nil)"
block_name
end
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#compile_send_recv_doesnt_raise(recv_code) ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 90
def compile_send_recv_doesnt_raise(recv_code)
wrap_with_try_catch(recv_code)
end
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#wrap_with_try_catch(code) ⇒ Object
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# File 'opal/lib/opal/nodes/defined.rb', line 74
def wrap_with_try_catch(code)
returning_tmp = scope.new_temp
push "(#{returning_tmp} = (function() { try {"
push " return #{code};"
push '} catch ($err) {'
push ' if (Opal.rescue($err, [Opal.Exception])) {'
push ' try {'
push ' return false;'
push ' } finally { Opal.pop_exception() }'
push ' } else { throw $err; }'
push '}})())'
returning_tmp
end
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